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        <h2>
          <span class="refentrytitle">vbapzmove</span>
        </h2>
        <p>vbapzmove — 
      Writes a multi-channel audio signal to a ZAK array with moving virtual sources.
    </p>
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      <div class="refsect1">
        <a id="idp162124272"></a>
        <h2>Description</h2>
        <p>
      Writes a multi-channel audio signal to a ZAK array with moving virtual sources.
    </p>
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      <div class="refsect1">
        <a id="idp162125536"></a>
        <h2>Syntax</h2>
        <pre class="synopsis"><span class="command"><strong>vbapzmove</strong></span> inumchnls, istartndx, asig, idur, ispread, ifldnum, ifld1, \
      ifld2, [...]</pre>
      </div>
      <div class="refsect1">
        <a id="idp162127520"></a>
        <h2>Initialization</h2>
        <p>
      <span class="emphasis"><em>inumchnls</em></span> -- number of channels to write to the ZA array. Must be in the range 2 - 256.
    </p>
        <p>
      <span class="emphasis"><em>istartndx</em></span> -- first index or position in the ZA array to use
    </p>
        <p>
      <span class="emphasis"><em>idur</em></span> -- the duration over which the
    movement takes place.
    </p>
        <p>
      <span class="emphasis"><em>ispread</em></span> -- spreading of the virtual source
    (range 0 - 100).  If value is zero, conventional amplitude panning
    is used. When <span class="emphasis"><em>ispread</em></span> is increased, the
    number of loudspeakers used in panning increases. If value is 100,
    the sound is applied to all loudspeakers. 
    </p>
        <p>
      <span class="emphasis"><em>ifldnum</em></span> -- number of fields (absolute value
    must be 2 or larger). If <span class="emphasis"><em>ifldnum</em></span> is positive,
    the virtual source movement is a polyline specified by given
    directions. Each transition is performed in an equal time
    interval. If <span class="emphasis"><em>ifldnum</em></span> is negative, specified
    angular velocities are applied to the virtual source during
    specified relative time intervals (see below). 
    </p>
        <p>
      <span class="emphasis"><em>ifld1, ifld2, ...</em></span> -- azimuth angles or
    angular velocities, and relative durations of movement phases (see
    below). 
    </p>
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      <div class="refsect1">
        <a id="idp162135312"></a>
        <h2>Performance</h2>
        <p>
      <span class="emphasis"><em>asig</em></span> -- audio signal to be panned
    </p>
        <p>
      The opcode <span class="emphasis"><em>vbapzmove</em></span> is the multiple channel analog of the opcodes like <a class="link" href="vbap4move.html" title="vbap4move"><em class="citetitle">vbap4move</em></a>, working on <span class="emphasis"><em>inumchnls</em></span> and using a ZAK array for output.
    </p>
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              </td>
              <th align="left">Warning</th>
            </tr>
            <tr>
              <td align="left" valign="top">
                <p>Please note that all <span class="emphasis"><em>vbap</em></span> panning opcodes require the <span class="emphasis"><em>vbap</em></span> system to be initialized using <a class="link" href="vbaplsinit.html" title="vbaplsinit"><em class="citetitle">vbaplsinit</em></a>.</p>
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      <div class="refsect1">
        <a id="idp162141936"></a>
        <h2>Examples</h2>
        <p>
      See the entry for <a class="link" href="vbap8move.html" title="vbap8move"><em class="citetitle">vbap8move</em></a> for an example of usage of the <span class="emphasis"><em>vbapXmove</em></span> opcodes.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp162144592"></a>
        <h2>Reference</h2>
        <p>
      Ville Pulkki: <span class="quote">“<span class="quote">Virtual Sound Source Positioning Using Vector Base Amplitude Panning</span>”</span> <span class="emphasis"><em>Journal of the Audio Engineering Society</em></span>, 1997 June, Vol. 45/6, p. 456.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp162146768"></a>
        <h2>See Also</h2>
        <p>
      <a class="link" href="vbap16.html" title="vbap16"><em class="citetitle">vbap16</em></a>,
      <a class="link" href="vbap16move.html" title="vbap16move"><em class="citetitle">vbap16move</em></a>,
      <a class="link" href="vbap4.html" title="vbap4"><em class="citetitle">vbap4</em></a>,
      <a class="link" href="vbap4move.html" title="vbap4move"><em class="citetitle">vbap4move</em></a>,
      <a class="link" href="vbap8.html" title="vbap8"><em class="citetitle">vbap8</em></a>,
      <a class="link" href="vbap8move.html" title="vbap8move"><em class="citetitle">vbap8move</em></a>,
      <a class="link" href="vbaplsinit.html" title="vbaplsinit"><em class="citetitle">vbaplsinit</em></a>,
      <a class="link" href="vbapz.html" title="vbapz"><em class="citetitle">vbapz</em></a>,
    </p>
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      <div class="refsect1">
        <a id="idp162155632"></a>
        <h2>Credits</h2>
        <p>
      </p>
        <table border="0" summary="Simple list" class="simplelist">
          <tr>
            <td>John ffitch</td>
          </tr>
          <tr>
            <td>University of Bath/Codemist Ltd.</td>
          </tr>
          <tr>
            <td>Bath, UK</td>
          </tr>
          <tr>
            <td>May 2000</td>
          </tr>
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        <p>
    </p>
        <p>New in Csound Version 4.07</p>
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